micro-wrapper-ratelimiter-uber/uber.go

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2016-10-27 14:58:10 +03:00
package ratelimit
import (
"github.com/micro/go-micro/client"
"github.com/micro/go-micro/server"
"go.uber.org/ratelimit"
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"context"
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)
type clientWrapper struct {
r ratelimit.Limiter
client.Client
}
func (c *clientWrapper) Call(ctx context.Context, req client.Request, rsp interface{}, opts ...client.CallOption) error {
c.r.Take()
return c.Client.Call(ctx, req, rsp, opts...)
}
// NewClientWrapper creates a blocking side rate limiter
func NewClientWrapper(rate int) client.Wrapper {
r := ratelimit.New(rate)
return func(c client.Client) client.Client {
return &clientWrapper{r, c}
}
}
// NewHandlerWrapper creates a blocking server side rate limiter
func NewHandlerWrapper(rate int) server.HandlerWrapper {
r := ratelimit.New(rate)
return func(h server.HandlerFunc) server.HandlerFunc {
return func(ctx context.Context, req server.Request, rsp interface{}) error {
r.Take()
return h(ctx, req, rsp)
}
}
}